The Tube Assy, cataloged under National Stock Number 2840-00-938-3855, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Tube Assy |
| FSC / FSG | 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components (FSG 28) |
| Manufacturers | Smiths Tubular Systems-Laconia, Inc. Div Lewis & Saunders (CAGE 21890); Kreisler Industrial Corporation (CAGE 05813); Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (CAGE 77445) |
| Parameter | Value |
|---|---|
| NSN | 2840-00-938-3855 |
| Primary Part Number | 568668 |
| Item Name | Tube Assy |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 568668 | Smiths Tubular Systems-Laconia, Inc. Div Lewis & Saunders (USA) |
| 568668 | Kreisler Industrial Corporation (USA) |
| 568668 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 568668 | 5/9 Secondary reference Carden Metal Fabricators Inc |
| 568668 | 5/9 Secondary reference International Livestock Equipment Co |
| 568668 | 5/9 Secondary reference Aero Tube Technologies, Llc Dba Tube Bends |
NSN 2840-00-938-3855 is a Tube Assy, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-00-938-3855 has 3 manufacturer part numbers on file: 568668 (Smiths Tubular Systems-Laconia, Inc. Div Lewis & Saunders), 568668 (Kreisler Industrial Corporation), 568668 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 2840-00-938-3855 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.